Duplicator



Sept. 8, 1936. v T. DANHEISER DUPLICATOR Filed March 13, 19:55 2 Sheets-Sheet 1 BY INVENTIOR: I. 1am,

ATTORNEY.

Sept. 8, 1936.

T. DANHEISIER 2,053,267

DUPLICATOR Filed March 15, 1935 2 Sheets-Sheet 2 BY z ATTORNEY.

Patented Sept. 8, N 136 UNITED STATES PATENT OFFICE 2,053,267 nuruca'roa Theodore Danheiser, New York, N. Y.,'assignor to The Beck Duplicator Company, a corporation of New York The invention relates to duplicators, of that form in which a negative or reversedimpression of matter to be copied is made upon a duplicating surface and positive impressions taken therefrom by bringing sheets of paper or the like in contact therewith, and it more particularly relates to that form of duplicator in which the duplicating surface is mountedupon a rotating member.

is to provide simple, eflicient, economical and adaptable means whereby the rapid handling of sheets of paper and the feeding of the same to the duplicating surface either automatically or by hand as may be desired and the positioning of the same with relation thereto, are facilitated. Further objects and advantages of the invention will be in part set forth in the following specification and in part will be obvious therefrom without being specifically pointed out, the same being realized and attained as hereinafter more fully described or as set forth or pointed out in the claims hereof. I

Withthe above and other objects of the inventicn in view, the invention consists in the novel construction, arrangement and combination of various devices, BllITlEl'ltS and parts, as set forth in the claims, hereof, certain embodiments of the same being illustrated in the accompanying drawings and described in this specification.

In the accompanying drawings,

Fig. 1 isa perspective view of a duplicator,

"showing one embodiment of my invention, as the same appears when used for the automatic or mechanical feeding 'of' sheets of paper to the duplicating surface; h

Fig. 2 is a perspective view, partly broken away, showing the same type of duplicator, arranged for hand-feeding of paperyand L Fig. 3 is a fragmentary view, on a somewhat reduced scale, showing a modified form of the mechanism. v

In carrying my invention into effect in one of the embodiments selected for illustration in the accompanying drawings and for description in this specification, and referring now to Figs. 1 and 2 of the drawings, it willbe seen that I provide a-main frame structure, which maybe of any form suitable for the purpose. As shown, the same comprises sidemembers il, secured together so as to form a frame of sufficiently rigid construction, which frame supports various moving and other parts of the machine.

Supported by the side frame members I1 is the One of the principal objects of the invention main rotating memberbwhich principally performs the actual duplicating work. It will be seen that this comprises a gear-wheel l9 and a plain wheel 20, of approximately the same size, connected by the semi-cylindrical sheet-metal 5 bed 2|. The latter may if desired be padded with fabric or other soft material, in the usual manner.

This rotary frame carries the adhesive duplicating surface used in the machine. The latter is not shown in the drawings, and may be applied to and assembled with the machine in any suitable manner. It may if desired consist of a film sheet, provided with suitable attaching means, such as metal ends having-hooks -or clamps to. hold the sheet in place upon the bed, or it may 15 if'desired consist of a sheet or roll of substantial length. the ends of. which are secured to spindles upon and from which the same may be wound and unwound and upon one or both of which the portions not in use may be stored. The spindles may be mounted in the rotary frame in any suitable manner, as for instance by means of the devices shown at 51. It will be seen that these devices in no way interfere with the work being done on the machine when a sheet is used, and that the machine is therefore equally well adapted for either a sheet or a roll.

It will be understood that suitable means for operating the machine are provided, which do not show in the drawings, as the same would be hidden by the wheel i9, and since the particular means for rotating the rotary .frame form no part of the present invention it is not thought necessary to illustrate the same. The same would preferably consist, in a machine of the type and size illustrated, of a crank connected with the main shaft 3i and adapted to be turned by/hand, but electric or other driving means may be used if preferred.

The wheel I9 is shown in the drawings as a gear 40 wheel, but this characteristic forms no essential part of the present invention, the gearing being intended for cooperation with other mechanism not shown inthe drawings, as for instance stripping mechanism as shown in Letters Patent No.

1,949,154 or Letters Patent No. 1,974,266, or, if

desired, driving mechanism as shown in the latter patent. c g Extendingforwardly from the side frame members H, are shoulders or extensions 24, having inclined upper surfaces or edges. each of which has a fixed pin or stud 36. Between these shoulders-is mounted a substantially horizontal table 25,

adapted to support a pile of paper from which 1 individual sheets are mechanically or automatically fed to the duplicating surface. The feeding mechanism as shown comprises an arm 60, loosely mounted on the shaft 6 I and provided with a rubber roll 62. The shaft Si is mounted in arms 63, which are pivotally secured in the sides of the table 25, and are reciprocated by means of the arm 65, when the mechanism is arranged as shown in Fig. 1. This arm 65 is provided with a hook 61, which engages the crank 69 onthe rot'ary frame when it is desired that the automatic feeding means shall operate, and which may be disengaged therefrom (see Fig. 2) and engaged with the stud 68, or held out of the way in any other convenient manner, when it is de-- slred that the automatic feeding means shall be inoperative.

Itwill be understood that by this means the reciprocating of the feeding mechanism, as the Adjustable paper-guides 2s, 21, 2a, and 29 are provided, also a guide 1I, under which the paper passes in reaching the duplicating surface, and

, which insures against curling up or other disbetween which the table is mounted.-

vided, to show the correct position .of the pile of sheets.

placement of the advancing edge of the dupli- 'cating surface. A locating mark 10 is also pro- Just behind the table 25 is a roller 32, andbehind said roller is a stop 35. The relative adjustment of the parts is such that a sheet of paper 'fed by the arm 60 will come to rest with its advancing edge over the roller 32, and will be prevented -from going too far by means of the stop 35. This stop is so mounted that as the rotary frame is turned, the stop 35 will be depressed out A removable inclined paper-shelf 50 is provided,

adapted to be supported upon the shoulders 24 This shelf 50 has downturned edges 5|, slots 52 and 53. and adjustable paper-guides 51. The slots 52 engage with the pins 36, and the larger notches 53 are adaptedto clear the wheels I9 and 20, thereby permitting the shelf 5!! tube mounted close to the roller 32. Slots 58 are provided'for the attachment if desired of an additional hori-.

zontal paper-supporting table, to hold a pile of sheets from which single sheets may be fed down by hand upon'the inclined shelf 50.

It is thought that the operation of this embodiment of the invention will be clear from what wise prepared in suitable duplicating ink. This' master copy may be applied to the duplicating surface in .either of the ways about to be described with reference to' the'blank sheets of for the edge paper, and may afterwards be stripped either by A pile of sheets of blank paper is then placed 7 upon the table 25, the roll 62. resting .upon the top sheet. The adjustable guides are adjusted so that the paper will feed in a straight direction, and, upon the rotary frame being turned, by hand or otherwise, successive sheets will be fed to the duplicating surface, with convenience, speed, and suillcient accuracy-of positioning for all ordinary purposes. That is to say, the forward or backward variation in position of succesive sheets fed in this manner will amount to a fraction of an inch, and would not be at all objectionable in the case of a letter or similar work.

When it is desired to make copies upon printed blanks or in other cases where perhaps even a sixteenth of an inch or less would spoil the appearance of the finished work, or even result in illegibility or inaccuracy on account of the misplacement of the matter in duplicating ink with reference to matter already on the page, and where correct positioning is therefore preferred to extreme speed and convenience, the shelf 50 is replaced, the arm I55 disconnected fromthe rotary frame, and the sheets of paper are then fed by hand, one at a time, down the shelf 50. In such case the paper passes down by gravity until it comes to rest against the stop. 35, and is accurately positioned thereby and held in place until the duplicating surface picks it up and carries it around, the stop at the same time being depressed out of the way as already explained. A modified form of the positioning means for thepile of paper is shown in Fig. 3 of the drawings. In this form of the invention, most of the parts are similar to those already described, and it is not believed necessary to refer to the same in detail. Instead of providing indicating'means as shown at 10 in'Fig. 1, however, I provide in this embodiment a movable stop I15. The table I25 is cut away to the point at which the edge of the pile should bev placed, and the stop I15 stands vertically at this point. When it is desired to operate the machine, the stop I15 is turned out of the path of the paper by rotating the,knob I19 and shaft I8I, in a clockwise direction. This knob is slidably mounted at the end of the shaft, having an internal spring (not shown) which tends to hold the knob closely in against the side portion I82 of the table I25. A pin I80 may engage a perforation in the portion I82 in the position shown in the-drawings, or, when the knob and shaft are slightly rotated, may engage a second perforatlon (not shown because hidden by knob I19), thereby holding the shaft I8I in either of two positions and permitting no intermediate position thereof. The stop I15 is operatively connected with the shaft I8I by members I16, I 11, and I18, in a manner which will be obvious from said Fig. 3.

' The operation of the invention is in other respects entirely similar to the operation of the first-described embodiment of the invention.

The advantages of the invention will be in large part self-evident. The combination feed size forms or requiring perfect registration, this combination-feed machine will take care of such requirements, with the utmost in speed and convenience. The simple hand feed attachment may be placed in position in a-f'ew seconds, and

the automatic feed disconnected, ,or vice versa. In this way' the machine is applicable for all kinds of forms as well as work on plain paper, letterheads, &c., without the necessity of separate machines, or of any elaborate fixtures, small partswhich may "become lost, set-screws or other devices which must be inserted'or removed. It will also be seen that in addition to the simplicity with which the combination-feed may be adjusted for either .type of operation, all parts are equally conveniently located in either case; no tools are necessary in changing the, feed, nor is any special skill required. .In actual use the invention has'proved to be a saving in expense as well as an increase in usefulness, in'oflices having the type of work referred .to. Other advantages of the invention will also be obvious to anyone familiar with such devices,'

and will be evident from what has been above said and from the drawings.

I do "not limit myself to the particular details of construction set forth in the foregoing specification and illustrated in the accompanying drawings, as the'same refer to and set forth only certain embodimentspf the invention, and it is obvious that the same may be modified, within the scope of the claims hereof, without departing from the spiritand scope of the invention. f

It is obvious, for instance, that my combination feeding mechanism may be used with any suitable type of rotary frame and appurtenant parts; also that if desired a removable set-screw,

claim as new and desire-to secure by Letters Patent, is as follows:

1. In a duplicator, the combination with a stationary frame and a rotary frame adapted to support a duplicating surface; 6f means adapted to bring paper into contact with saiddupli- 'cating surface in a predetermined position either automatically .or by hand as may be desired, said means comprising a substantially horizontal paper-supporting shelf or table, an inclined papersupporting shelf'or table apted tobe removably mounted over said firs -named shelf or table, andaautomatic means adapted to feed paper on saidhorizontal shelf or table toward said rotary frame, said automatic means being de tachably operatively connected with said rotary v frame, said lower shelf or table being provided with means adapted to support said upper shelf or table'when the latter is in use, wherebywhen it is desired to feed paper automatically to said duplicating surface said automatic feeding device may be connected witlf said'rotary frame and operated thereby and said inclined shelf removed, and when it is desired to feed paper by hand to saidduplicating surface said inably mounted stop or guide against which an 2. In a, duplicator, the combination with a stationary frame and a rotary frame adapted to support a duplicating surfacej of means adapted to bring paper into contact with said duplicating surface in a predetermined position either automatically or by hand as may be desired, said means comprising a paper-supporting shelf or table, a second paper-supporting shelf or table adapted to be removably mounted over said firstnamed shelf or table, said lower shelf or table being provided with means adapted to support said upper shelf or table when the-latter is in use, and automatic means adapted to be operated by said rotary frame and to feed paper on one said shelf or table toward said rotary frame.

3. In a duplicator, the combination with astationary frame and a rotary frame adapted to sup- .tobe removably mounted over said first-named shelf or table, said lower shelf or table being provided with means adapted to support said upper shelf or table when the latter is in use; automatic means on one first-named shelf or table adapted to' feed paper toward said rotary frame, said automatic means being detachably operatively connectedwith said rotary frame, and a stop or guide. against which an edge of a sheet of paper may abut and be brought to rest thereby in the path of said duplicating surface.

4. In a duplicator, the combination with a stationary frame and a rotary franfe adapted to supportqa duplicating surface; ofmeans adapted to bring paper into contact with said duplicating surface either automatically or by hand as may be desired, said means comprising a substantially horizontal paper-supporting shelf or table, an

inclined paper-supporting shelf or table adapted to be removably mounted over said first-named shelf or table, said lower shelf or table-being provided with means adapted to support said upper shelf or table when they latter is in use, automatic means adapted to feed-paper on one said shelf or table toward said rotary frame when desired and to be placed in inoperative position 'when desired without substantial change'of location relatively to the fachine as a whole, a movedge of a sheet of paper may abut and be brought to rest thereby in the path of the duplicating sur determined pointin the operation of the machine and thereby release said paper in the path of the duplicating surface as the same approaches said paper. I

5. In a duplicator, the combination with a stationary frame anda rotary frame adapted to support a duplicating surface; of means adapted to bring paper'in'to contact with said surfacefl-either automatically or by hand as may be desired, comprising a paper-supporting shelf or table, automatic means adapted tofeed paper thereon toward said rotary frame, a second shelf or table adapted to be removablymounted over said firstface, and meaiis adapted to move said stop out "of the path of said duplicating surface at a prenamed shelf or table for hand feeding of paper port a duplicating surface; of means adapted to bring paper into contact with said surface, either automatically or by hand as may be desired. oomprising a paper-supporting shell or table, automatic means adapted to feed paper thereon toward said rotary'irame. a second shell. or table adapted to be removably mounted over said firstnamed shelf or table for hand teedin: oi-paper toward. said rotary-frame, said lower shelf or table being provided with inclined shoulders and aosaacr iixed cousins means adapted to support said upper table when the latter is in use.

8. In a duplicator, the combination with a stationary frame and a rotary frame-adapted to support a duplicating surface; of means adapted to bring paper into contact with said surface either automatically or by hand as may be desired, comprising a paper-supporting shelf or table, automatic means adapted to feed paper thereon to- 1 ward said rotary frame. a second shelf or'table adapted to be removably mounted in positiorrfo'r hand feeding 01' paper toward said rotary frame, said first-named. shelf or table'bein provided named shelior table when the latter is in use, in

relation to the machine as a whole.

. v THEODORE DANHEISER.

with means adapted to support said second- 3 15' such position that said automatic means need not k be moved from the normal location thereof with 

